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Title:
OLEFIN POLYMERIZATION CATALYST
Document Type and Number:
Japanese Patent JPH03188092
Kind Code:
A
Abstract:

NEW MATERIAL: Metallocene compounds including monocyclic polycyclic ligands of a single cyclopentadienyl, respectively combined with a Group IVB transition metal atoms, and ligands of hetero atoms of a Groups VA or VIA elements.

EXAMPLE: Dimethylsilyltetramethylcyclopentadienyl-tert-butylamide zirconium dichloride.

USE: Components for olefin polymerization catalysts. Catalyst systems obtained by the combination with alumoxanes, give polyolefins having a high weight average molecular weight, narrow distribution of molecular weight, and low concentration of catalyst residue.

PROCESS: A cyclopentadienyl lithium compound is reacted with a dihalide first, and then the product is reacted with a lithium amide salt. Then the product is reacted with an alkyl lithium reagent to obtain a dilithium salt of a cyclopentadienyl compound, and the same is reacted with a Group IVB transmition metal halide.


Inventors:
CANICH JO ANN MARIE (US)
Application Number:
JP24368390A
Publication Date:
August 16, 1991
Filing Date:
September 13, 1990
Export Citation:
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Assignee:
EXXON CHEMICAL PATENTS INC (US)
International Classes:
B01J31/18; C07F7/02; C07F7/10; C07F7/00; C07F7/28; C07F17/00; C08F4/00; C08F4/60; C08F4/602; C08F4/64; C08F4/642; C08F4/6592; C08F10/00; C08F10/06; C08F210/16; C08F4/659; C08F110/02; C08F110/06; C08F210/06; C08F210/18; (IPC1-7): C07F17/00; C08F4/642; C08F10/00
Attorney, Agent or Firm:
Yuzo Yamazaki (2 outside)